Mold for making concrete curbs.



J. R. ZEISER.

MOLD FOR MAKING CONCRETE CURBS.

' APPLICATION. FILED DEC- IT. 1915. 1,21%,870 Patented Feb. 6,1917.

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J. R. ZEISER.

MOLD FOR MAKING CONCRETE GURBS.

APPLICATION FILED DEC-17, l9i5i Patented Feb. 6, 1917.

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JOHN B. ZEISER. 0F BERW 10K, PENNSYLVANIA.

MOLD FGR MAKING CONCRETE CURBS.

Specification of Letters Patent.

l atented Feb. 8, 191W.

Application filed. December 17, 1915. Serial No. 67,426.

To all whom it may concern:

Be it known that 1, JOHN R. Znisnn, a citizen of the United States, residing at Berwick, in the county of Columbia and State of Pennsylvania, have invented certain new and useful Improvements in Molds for Making Concrete Curbs, of which the following is a specification.

The invention has for its object the provision of means for confining concrete and like plastic material in the formation of curbing in the construction of gutters, roads, sidewalks and like work requiring the provision of a curb.

The purpose of the invention is the provision of a mold which may be readily adjusted to the height of the curb and which will obviate the necessity for staying the sides by braces or the piling of earth or stones thereagainst, said mold being of such formation as to be readily set up, taken apart and moved as the work progresses.

A further purpose of the invention is the provision of a peculiar form of support which is self-sustaining and adapted to r tain the side pieces in position against spreading, a number of such supports being driven into the ground along the prescribed line of curb.

The invention also has for its object the provision of unique supporting means for the side pieces whereby the latter may be held at the required adjusted position, such supporting means being retained in the adjusted position by means of the weight of the side pieces.

A further purpose of the invention is the provision of a novel form of spacer for separating the curb so as to allow for contrac-. tion and expansion, such spacer being adjustable in width to admit of its ready removal from the curb when the latter is of a form having the base of greater thickness than the top.

With these and other objects in view, which will readily appear as the nature of the invention is better understood, the same consists in the improved construction and novel arrangement and combination of parts which will be hereinafter fully described and particularly claimed.

In the acoompanyingdrawings has been.

illustrated a simple and preferred formof the invention it being, however, understood that no limitation is necessarily made to the precise structural details therein exhibited, but that changes, alterations and modifications within the scope of the invention as claimed may be resorted to when desired.

Referring to the drawings,

Figure 1 is a side *iew, parts broken away, of a mold for curbing embodying the invention Fig. 2 is an end view of the mold;

Fig. 3 is an enlarged detail view showing more clearly the relation of the support for a side piece;

Fig. 4 is a reverse view of the parts illus trated in Fig. 3;

Fig. 5 is a section on the line of Fig. 3;

Fig. 6 is a View similar to Fig. 2 of a modificaticn showing a spacer in position;

Fig. 7 is a side view of an end portion of the mold illustrated in Fig. 6;

Fig. 8 is a detail view in perspective of a spacer and a support therefor;

Fig. 9 is a horizontal section on the line 99 of Fig. 8;

Fig. 10 is a detail view showing the meeting ends of adjacent side pieces and an end portion of the support.

Corresponding and like parts are referred to in the following description and indicated in all the views of the drawings by the same reference characters.

The mold comprises side pieces and uprights. the latter constituting supports for the side pieces. The side pieces may be of any length and width. In order that curb ing may be constructed of different heights it is preferred to provide the side pieces in sections, as indicated in the drawings so that one or more sections may be placed in position according to the height or depth of the curb to be constructed. As illu, trated each of the side pieces comprises an upper section 1 and a lower section 2. These sections are provided along their upper and lower longitudinal edges with outwardly extending flanges 3 which are formed in their ends with notches i to receive the legs or side members of the supporting uprights. W hen the side pieces are placed in position end portions of adjacent sections overlap a short distance and the notches in the ends of the flanges receive the legs of the uprights, thereby preventing lateral displacement of the side pieces. The ends of the flanges 3 lie in the same plane so that the upper surface of the curb will lie in the same plane throughout its length. The side pieces may be constructed of any material but it is essential that they be provided with the laterally extending flanges 3 which serve as stiffening means and also as securing means to make engagement with the uprights in the manner stated. When the side pieces are constructed of sheet metal the flanges 3 may be formed by bending edge portions thereof but in the event of the side pieces being formed of boards angle irons may be secured to the edges of such boards, thereby providing the lateral flanges as will be readily understood.

The uprights 5 are of substantially U- shape and the extremities of the side members or legs are pointed to facilitate their penetrating the ground when driven therein. A slot 6 is formed in each member or leg of the uprights 5 and is adapted to receive a support for holding the side pieces in the required adjusted position. The slots 6 are located near the upper; ends of the legs or side members of the uprights and may be of any length. The uprights 5 are preferably constructed of flat metal bars bent into the shape substantially as shown, the uprights being disposed along the prescribed line of curb with their legs or side members exterior to the side pieces so as not to come in contact with the concrete or other plastic material from which the curb is constructed.

I The uprights are of a length or height so between the leg or side members of the uprights is such as to correspond with the.

thickness of the curb.

The support for the side pieces consists of a shank 7 and an arm 8. Theshank 7 is 56' disposed at a right angle to the plane of the arm 8 and is of oblong form in cross section so as to bind against opposite edges of the upright bordering upon the slot 6 and thereby hold the support in the adjusted position.

" The arm 8 normally occupies an oblique position with reference to the horizontal and its outer upper end is adapted to come beneath the topmost flange 3 of the side piece and sustain the latter inthe adjusted position. The weight of the side piece thus imposed upon the extremity of the arm 8 tends to turn the latter and the shank 7, thereby causing the latter to bind upon opposite I edges of the upright defining the slot 6 with "the result that the support and side piece are held in the required adjusted position.

The width of the shank 7 is somewhat greater than the width of the slot 6, hence when the support is turned to bring the shank 7 out of line with the slot 6 diagonally opposite corners of the shank engage and bind upon the edges of the slot 6 and hold the parts in the required adjusted position. A cotter pin 9 is passed through an opening in the end of the shank 7 and retains the support in the'slot 6. The arm 8 is disposed so as to come between the side piece and the leg or member of the upright, as indicated most clearly in Fig. 5. When the outer end of the arm 8 is elevated the support may be moved up or down, thereby admitting ofthe side piece being raised or lowered to the required adjusted position. After the parts have been adjusted they are retained in place by the binding action of the shank 7 against opposite edges of the stop 6 in the manner stated.

Figs. 6 and 7 show a form of upright 5 which has its side members or legs slightly spread at their free ends, thereby adapting the mold to the formation of a curb having its base portion of greater thickness than its upper portion. The side pieces and the supporting means therefor are precisely the same as hereinbefore described in connection with Fig. 1 and the detail views thereof.

It is to be understood that in the formation of curbing of concrete or plastic material that it is essential to provide joints to allow for contraction and expansion, thereby preventing the cracking of the curb. The curb is divided by spacers which consist of thin plates set into the mold at the required distances apart so as to divide the curbing into desired lengths. These spacers are retained in place by means of supports 10 which conform to the shape of the supports 5 or 5. The spacer supports straddle the mold and may be utilized as means to prevent spreading of the side pieces. Eachof the spacers is of a shape to come between the inner faces or walls of the side pieces and is connected at its upper end to the cross piece of the support 10 which rests upon the upper edges of the side pieces. In the form illustrated in Fig. 6 and detail views thereof, the spacer comprises two sections 11 and 12. The section 11 is hollow, that is, comprises spaced walls between which the section 12 is adaptedto enter, thereby providing for expanding or contracting the width of the spacer as may be required. When the spacer isfitted between the side pieces of a mold which are spaced apart a greater-distance at their lower edges than at their upper edges the sections 11 and 12 are moved apart .a greater distance at their lower ends than at their upper ends. After the material has set and it is required to withdraw the spacer therefrom it is necessary to move the lower portion of the neiasvo section 12 into the space of the section 11 preliminary to withdrawing the spacer from the curb. This may be effected by tapping the projectingend13 of the section 12 so as to move the lower end of such section into the space of the section 11. For this purpose the section-11 is fixedly connected to the cross piece of the support whereas the section 12 is pivotally 10 cross piece of the support.

In Figs. 1 and 2, I illustrate a spacer 10 in the form of a sheet of metal slotted to provide portions seating between the side pieces of the mold and against the outer 15 faces of the side pieces.

When it is desired to construct a length of curb by means of a mold embodying the invention the side pieces are placed in position with the end portions of adjacent sections overlapping. The uprights 501 5 are located along the prescribed length of curb with the lower ends of their legs or side members driven into the ground. The side members of the uprights enter the notches 4 formed in the abutting flanges 3, thereby preventing lateral displacement of the side pieces and the latter are held at the required elevation by means of the supporting means 7 and 8 in the manner stated. Spacers are 39 disposed along the length of the mold to divide the curb, such spacers being retained in place by means of U-shaped supports in the manner stated. The material is filled into the mold between the side pieces thereof and is leveled by passing a tool or straight edge over the upper edges of the side pieces.

After the material has set the spacers are.

withdrawn and the side pieces removed, the mold being shifted to a new position and 49 the operation just described being repeated.

The uprights retain the side pieces in position without requiring the placing of earth or stones thereagainst or the employment of bracing means. The side pieces may be quickly adjusted up or down by means of the supporting means therefor in the manner stated. The mold is of such formation as to be quickly set up or taken apart and shifted from one place to another without requiring the use of tools for holding the side pieces in the required adjusted position. Having thus described the invention, what is claimed as new is 1. In a mold of the character described, the combination of a slotted upright, a side piece, and a support comprising an arm and a shank, the arm engaging the side piece and sustaining the same in the adjusted position and the shank passing through the slot of the upright and binding therein by the action of the weight of the side piece.

2. In a mold of the character specified, a slotted upright, a side piece, and a support comprising a shank and an. arm, the latter engaging the side piece and the shank passconnected to the ing'through the slot of the upright and of such form as to bind against opposite edges of the upright bordering upon the slot when the arm is sustaining the weight of the side piece. 7

3. In a mold of the character described, the combination of a slotted upright, a side piece having a laterally extending flange en- 'gaging the upright, and a support comprising a shank passing through a slot oi the upright, and an arm coming between such upright and side piece and engaging under the flange of the side piece, such support holding the side piece in the adjusted position by the binding action of the shank 0 against opposite edges of the upright bordering upon the slot therein when the arm is sustaining the weight of the side piece.

4-. In a mold of the character described, side pieces, a U-shaped support arranged as with its side members engaging the outer faces of the side pieces, and an adjustable spacer secured to the cross piece of the U- shaped support.

5. In a mold of the character described, so a U-shaped support, and a sectional spacer plate attached to the cross piece of the support, one of such sections being fixed and the other section movable.

6. In a mold of the character described, a U-shaped support, and a sectional spacer plate attached to the cross piece of the support, one of such sections being fixed and the other section being pivoted and having an extension.

7. A mold of the character described including side mold members formed along their upper and lower edges with outwardly directed flanges provided at spaced intervals with vertically alined notches, and substantially U-shaped supports, the arms oi which are adapted to seat in the notches of the flanges with their ends extending into the ground, whereby to support the side members against any movement save inwardly toward each other.

8. In a mold construction, a 'U-shaped support and a sectional spacer plate carried by the intermediate portion of the support and including a fixed section U-shaped in 1 cross section, and a swinging section movable to project a more or less distance between the sides of the fixed section.

9. In a mold construction, a U-shaped support and a sectional spacer plate carried 1% by the intermediate portion of the support and including a fixed section U-shaped in cross section, and a swinging section movable to project a more or less distance between the sides of the fixed section, the mov- 1Z5 able section being provided with an upward extension by means of which it may be swung.

10. A mold of the character described, side mold members having outwardly directed flanges provided at spaced intervals with notches, U-shaped supports, the sides of which are adapted to engage in the notches of the flanges With their ends projecting into the ground, and additional U shaped supports, the sides of which are adapted to engage against the unnotched JOHN R. ZEISER. 8.

copies 0! this patent may be obtained for five cents each, by addressing the Commissioner of Patents. Washington, D. C. 

